G. Thompson Proteus (IX-518), ex-AS-19, berthing craft USS IX-519, ex-YC-1643, boat landing stage USS IX-520, ex-APL-19 USS IX-521, ex-AFDB-1, section D USS IX-522, ex-ABSD-2, ex-AFDB-2, section D, target support barge USS IX-523, ex-YOG-93, training hulk (boarding party tactics) USS IX-524, ex-ABSD-2, ex-AFDB-2, section F, target support barge USS IX-525, ex-AFDB-1, section C USS IX-526, ex-YRST-1, later YR-94 USS IX-527, ex-YFN-1259, submarine test support barge USS IX-528, ex-YR-55, ex-YRDH-1, submarine test support barge Sea Shadow (IX-529), radar stealth technology demonstrator USS IX-530, ex-YFN-268, ex-YFND-5 USS IX-531, ex-YP-679 Joint Venture (IX-532), experimental high speed transport USS IX-533, ex-US Army BD 6652, ex-YD-222 USS IX-534, ex-ABSD-2, ex-AFDB-2, section B USS IX-535, ex-ABSD-2, ex-AFDB-2, section H USS IX-536 [A], ex-AGOS-8 USS IX-538 USS IX-539 Neodesha (IX-540) [A], ex-YTB-815 USS IX-541 USS White Bush (IX-542), ex-YF-339, ex-WLM-542 USS IX-543 USS IX-544 USS IX-545, ex-YTB-814 Unclassified miscellaneous submarines (IXSS) A number of submarines were briefly given the IXSS hull symbol in 1971 prior to their disposal, nearly all had previously held the AGSS designation. Cod (IXSS-224), ex-SS-224, AGSS-224 Rasher (IXSS-269), ex-SS-269, SSR-269, AGSS-269 Bowfin (IXSS-287), ex-SS-287, AGSS-287 Ling (IXSS-297), ex-SS-297, AGSS-297, museum ship Lionfish (IXSS-298), ex-SS-298, AGSS-298, museum ship Roncador (IXSS-301), ex-SS-301, AGSS-301 Perch (IXSS-313), ex-SS-313, SSP-313, ASSP-313, APSS-313, LPSS-313 Charr (IXSS-328), ex-SS-328, AGSS-328 Carp (IXSS-338), ex-SS-338, AGSS-338 Chopper (IXSS-342), ex-SS-342, AGSS-342 Pampanito (IXSS-383), ex-SS-383, AGSS-383 Torsk (IXSS-423), ex-SS-423, AGSS-423 Runner (IXSS-476), ex-SS-476, AGSS-476 Requin (IXSS-481), ex-SS-481, SSR-481, AGSS-471 See also Armadillo-class tanker List of current ships of the United States Navy List of US Navy ships sunk or damaged in action during World War II § Miscellaneous unclassified (IX) Type B ship - Trefoil-class concrete barge Type B7-D1 References Citations Sources